Remove old FocusManager code from Aura.

ui/aura/demo/demo_main.cc

Index: ui/aura/demo/demo_main.cc
diff --git a/ui/aura/demo/demo_main.cc b/ui/aura/demo/demo_main.cc
index e56ab714677c794f139d34bd348169347e650655..abdd514c95eb37804be924b957d070e9e2b4c284 100644
--- a/ui/aura/demo/demo_main.cc
+++ b/ui/aura/demo/demo_main.cc
@@ -11,8 +11,8 @@
 #include "ui/aura/client/default_capture_client.h"
 #include "ui/aura/client/stacking_client.h"
 #include "ui/aura/env.h"
-#include "ui/aura/focus_manager.h"
 #include "ui/aura/root_window.h"
+#include "ui/aura/test/test_focus_client.h"
 #include "ui/aura/test/test_screen.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_delegate.h"
@@ -122,8 +122,8 @@ int DemoMain() {
       test_screen->CreateRootWindowForPrimaryDisplay());
   scoped_ptr<DemoStackingClient> stacking_client(new DemoStackingClient(
       root_window.get()));
-  aura::FocusManager focus_manager;
-  aura::client::SetFocusClient(root_window.get(), &focus_manager);
+  aura::test::TestFocusClient focus_client;
+  aura::client::SetFocusClient(root_window.get(), &focus_client);
 
   // Create a hierarchy of test windows.
   DemoWindowDelegate window_delegate1(SK_ColorBLUE);